Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 52: Precision Measurement and Metrology 3
Q 52.5: Vortrag
Donnerstag, 17. März 2011, 15:30–15:45, HÜL 386
The AEI 10m Prototype Interferometer — •Tobias Westphal for the 10m prototype team — A. Einstein Inst., QUEST, Leibnitz Univ. Hannover
A 10m Prototype Interferometer is currently being set up at the AEI in Hannover, Germany. Among the main objectives are the demonstration of novel techniques for future generations of GW detectors, as well as building an instrument operating at and beyond the standard quantum limit of interferometry for 100g test masses.
For the pre-isolation of the experimental setup three seismically isolated optical tables inside a large (ca. 100m3) ultra-high vacuum envelope are set up. The differential motion of these tables will be stabilised via a set of Mach-Zehnder interferometers. All relevant optical components will be mounted on top of these isolated tables by means of multiple-cascaded pendulum suspensions. A suspended triangular ring cavity with a finesse of ca. 7300 will, in conjunction with a molecular iodine reference, serve as a frequency reference for the stabilisation of the 35W Nd:YAG laser. The main instrument is a 10m Michelson interferometer with Fabry-Perot cavities in the arms. The end mirrors will be made of Khalili-style Fabry-Perot cavities to minimise the effective coating thermal noise. The design of the interferometer is done such that the sum of all classical noises lies well below the sum of quantum noise in a frequency band around 100Hz. The layout, status, and progress of the AEI 10m prototype will be given in this talk.